Exploring the Photochemistry of an Ethyl Sinapate Dimer: An Attempt Toward a Better Ultraviolet Filter.

Autor:	Horbury MD; School of Electronic and Electrical Engineering, University of Leeds, Leeds, United Kingdom., Turner MAP; Department of Chemistry, University of Warwick, Coventry, United Kingdom., Peters JS; Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, Oxford, United Kingdom., Mention M; URD ABI, CEBB, AgroParisTech, Pomacle, France., Flourat AL; URD ABI, CEBB, AgroParisTech, Pomacle, France., Hine NDM; Department of Chemistry, University of Warwick, Coventry, United Kingdom., Allais F; URD ABI, CEBB, AgroParisTech, Pomacle, France., Stavros VG; Department of Chemistry, University of Warwick, Coventry, United Kingdom.
Jazyk:	angličtina
Zdroj:	Frontiers in chemistry [Front Chem] 2020 Jul 28; Vol. 8, pp. 633. Date of Electronic Publication: 2020 Jul 28 (Print Publication: 2020).
DOI:	10.3389/fchem.2020.00633
Abstrakt:	The photochemistry and photostability of a potential ultraviolet (UV) radiation filter, dehydrodiethylsinapate, with a broad absorption in the UVA region, is explored utilizing a combination of femtosecond time-resolved spectroscopy and steady-state irradiation studies. The time-resolved measurements show that this UV filter candidate undergoes excited state relaxation after UV absorption on a timescale of ~10 picoseconds, suggesting efficient relaxation. However, steady-state irradiation measurements show degradation under prolonged UV exposure. From a photochemical standpoint, this highlights the importance of considering both the ultrafast and "ultraslow" timescales when designing new potential UV filters. (Copyright © 2020 Horbury, Turner, Peters, Mention, Flourat, Hine, Allais and Stavros.)
Databáze:	MEDLINE
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